Musiclily Big Flated Head Guitar Security Strap Locks System and Buttons, Chrome(Pack of 2) Schaller style strap lock system, Ideal for guitar strap locking. Heavy duty, big size; Fast assembly and easy release Easy to install, convenient to use;Color: Chrome The strap lock system replaces your original strap pegs without any guitar modification and attaches to your strap and snaps securely into locking position. Package includes : 2 units Strap locks